14) Greeks from another city should never be treated the same as strangers. or barbarians

15. The third wave
of criticism ll'IVDlVES whether the ideal city , previously discussed ,could even exist.

16. Socrates was more
concerned in proving his ideal city plausible than in understanding justice .

1. True

2. True

3. False 

Step-by-step explanation

Socrates believes that "In founding the city we are not looking to the exceptional happiness of any one group among us, but, as far as possible, of the city as a whole (420b)." The overall happiness of the individual depends on the government and overall happiness of the city as a whole. Within this city it is essential that the guardians guard against wealth and poverty. You must look at the injustices that occur in the city before you can observe the injustices within an individual.